tag:blogger.com,1999:blog-1709537690528523236.post6555661105348035923..comments2024-03-29T05:47:08.860+10:00Comments on in my view ...: missing the point: a proposal for an alternativeobakesanhttp://www.blogger.com/profile/13743339737847465926noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1709537690528523236.post-70400608952288322162010-03-22T19:08:35.089+10:002010-03-22T19:08:35.089+10:00Tim
thanks for your comment. This was (as you can...Tim<br /><br />thanks for your comment. This was (as you can tell) an on the fly post. I don't want to argue for extending cameras into HDRI (although something like the superCCD would perhaps do that)<br /><br />I recognise that JPG is also undergoing processing, but it is not quite the same as the tonemapping which high dynamic range content has to undergo.<br /><br />it might of course even be that the storage is not beneficial in terms of a cost benefit analysis of storage space.<br /><br />however I can't see any detriment to moving from integer to decimal representations of the imagesobakesanhttps://www.blogger.com/profile/13743339737847465926noreply@blogger.comtag:blogger.com,1999:blog-1709537690528523236.post-27081005044348393912010-03-22T18:56:01.903+10:002010-03-22T18:56:01.903+10:00I think you might have got the wrong end of the st...I think you might have got the wrong end of the stick. <br /><br />1) No data format can be viewed without processing at all. JPG needs a 'lot' of processing before being able to view it. I think you mean 'openable with most standard operating sysems without any additional software installed'.<br /><br />2) 8 bits might be enough to store the brightness range of the eye (arguably) but not enough to store which 8 bits in the full range of brightness from dark to pointing at the sun. This would mean you couldn't accurately store a picture from a digital camera because you didn't have enough resolution (although you do have the range).<br /><br />3) The fixed precision 8bit encoding you linked to is actually a 32 bit encoding<br /><br />4) If you were to use 8 bits to encode in an EXR style way (EXR is 16 bit), you would need to use 5 bits for number and 3 bits for exponent resulting in a wide brightness range but a very low fixed precision accuracy<br /><br />5) Any newly invented image storage file type will suffer from your first mentioned problem of no being openable on all standard systems.<br /><br />I do agree that using some form of HDR file type makes a lot of sense but you can't get away fom the fact that most of this use 32bit storage and if you reduce this, you lose reslution for smooth photographic transitions.Tim Parkinhttps://www.blogger.com/profile/12597110929479917422noreply@blogger.com